Philips-LX-7000-SA-Service-Manual(1) 电路图 维修手册.pdf

《Philips-LX-7000-SA-Service-Manual(1) 电路图 维修手册.pdf》由会员分享，可在线阅读，更多相关《Philips-LX-7000-SA-Service-Manual(1) 电路图 维修手册.pdf（64页珍藏版）》请在收音机爱好者资料库上搜索。

1、GB CLASS 1 LASER PRODUCT COMPACT DIGITAL AUDIO Service Manual Service ServiceService ServiceService LX7000SA/22S fr Reparaturen sind Original-Ersatzteile zu verwenden. I Le norme di sicurezza esigono che lapparecchio venga rimesso nelle condizioni originali e che siano utilizzati i pezzi di ricambio

2、 identici a quelli specificati. After servicing and before returning set to customer perform a leakage current measurement test from all exposed metal parts to earth ground to assure no shock hazard exist. The leakage current must not exceed 0.5mA. CLASS 1 LASER PRODUCT 3122 110 03420 GB Warning ! I

3、nvisible laser radiation when open. Avoid direct exposure to beam. SVarning ! Osynlig laserstrlning nr apparaten r ppnad och sprren r urkopplad. Betrakta ej strlen. SFVaroitus ! Avatussa laitteessa ja suojalukituksen ohitettaessa olet alttiina nkymttmlle laseristeilylle. l katso steeseen! DK Advarse

4、 ! Usynlig laserstrling ved bning nr sikkerhedsafbrydere er ude af funktion. Undg udsaettelse for strling. 1-6 DISMANTLING INSTRUCTIONS Dismantling of the Tuner Board and Main Board and AVC Board Figure 3 1) Loosen 6 screws A to remove the Cover Top (pos 260). - 2 screws each on the left & right sid

5、e (see Figure 1) - 2 screws on the rear (see Figure 2) - See Service position A 2-12-1 Figure 4 Figure 2 Figure 1 3) Remove the Bracket PCB Mains (pos 259) by pressing the catch C1 inward and slide it up in the direction as shown in Figure 3. Dismantling of the Tuner Board and Main Board and AVC Boa

6、rd 5) Remove 2 screws G (see Figure 4) to loosen the Bracket AV PCB (pos 255). 4) Remove 1 screw C (see Figure 2) and uncatch 2 catches C2 (see Figure 4) to loosen the Main Board (pos 1104-B). - See Service position B 6) Remove 6 screws E and 2 screws F (see Figure 2) to loosen the Plate Rear (pos 2

7、51) and AVC Board (pos 1102). - See Service position D 2) Remove 3 screws B and uncatch 2 catches B1 (see Figure 2) to loosen the Tuner Board (pos 1101). 2-22-2 1) Use a Flat Head screw driver to give a push in the direction as shown in Figure 9 to unlock the DVD Tray before sliding it out. DISMANTL

8、ING INSTRUCTIONS Dismantling of the Supply Board and Power Amplifier Board 2) Slide out the DVD Tray and remove the Cover Tray DVD (pos 105) as shown in Figure 10. 3) Slide out the DVD Tray fully and remove 6 screws J (see Figure 11) to loosen the DVD Module (pos 1109). - See Service position E 1) R

9、emove 7 screws D to loosen the Supply Board (pos 1104-A) and Power Amplifier Board (pos 1103). - 2 screws on the Plate Rear (see Figure 2) - 5 screws on the Plate Bottom (see Figure 5, 6, 7 & 8) - See Service position C Figure 6 Figure 8 Figure 7 Figure 9 Figure 10 Figure 11 Dismantling of the DVD M

10、odule Figure 5 2-32-3 Repair Hints 1) Remove 7 screws H (see Figure 12 and Figure 13) and uncatch 2 catches H1 (see Figure 13) to loosen the Front Panel Assembly from the set. - 4 screws on top of the Front Panel Assembly - 3 screws and 2 catches H1 at the bottom of the Front Panel Assembly - See Se

11、rvice position F DISMANTLING INSTRUCTIONS Dismantling of the Key & Control Boards 2) Make sure to unplug the cable (if obstructed) before separate the Front Panel Assembly from the set (see Figure 14). Figure 12 Figure 13 Figure 14 1) During repair it is possible to disconnect the ECO6 Tuner Board c

12、ompletely unless the fault is suspected to be in that area. This will not affect the performance of the rest of the set. Dismantling of the Front Panel Assembly Figure 15 Figure 16 1) Remove 1 screw K (see Figure 15) to loosen the Headphone Board (pos 1105-D). 2) Remove 6 screws L (see Figure 15) to

13、 loosen the Volume& IR Board (pos 1105-C). 3) Remove 2 screws M (see Figure 16) to loosen the Power On/Off Board (pos 1105-A). 4) Remove 2 screws N (see Figure 16) to loosen the Bracket LED SACD (pos 109) and SACD LED Board (pos 1105-B). 5) Remove 3 screws P (for LX8000SA 2 screws only) and uncatch

14、2 catches P1 (see Figure 16) to loosen the Top Key Board (pos 1105-E). 2) The flex cables are very fragile, care should be taken not to damage them during repair. After repair, be very sure that the flex cables are inserted properly into the flex sockets before encasing, otherwise faults may occurs.

15、 2-42-4 Service position A Service position C Service position B Use a insulation sheet to prevent any damaged or short-circuit of the boards. Service position D Service position F Service position E Use a insulation sheet to prevent any damaged or short-circuit of the boards. DISMANTLING INSTRUCTIO

16、NS Various other Tests Activated withACTIONTEST SEEPROM FORMAT TEST Load default data. Display shows NEW for 1 second. Caution! All presets from the customer will be lost! Disconnect mains cord LEAVE SERVICE TEST PROGRAM T 9 to Exit EEPROM TESTA test pattern will be sent to the EEPROM. PASS is displ

17、ayed if the uProcessor read back the test pattern correctly, otherwise FAIL will be displayed. CENTER - (RC) AUTO STANDBY TOGGLE Pressing this button will toggle between the status AUTO STANDBY ON and AUTO STANDBY OFF. The status will scroll once across the Display. Rotary Volume Knob ROTARY ENCODER

18、 TEST Display shows value for 2 seconds. Values increases or decreases in steps of 1 until 0 (Volume Min.) or 40 (Volume Max.) is reached. Y N Y N N BII Button pressed? BII Button pressed? BII Button pressed? DISPLAY TEST Display shows Figure 1 and switch all LEDs on (see Table 2 - Pattern 1) Displa

19、y shows Figure 2 and switch alternate LEDs on (see Table 2 - Pattern 2) LEDs SACD STANDBY / ECO POWER LCD BACKLIGHT Pattern 1 ON GREEN ON Pattern 2 OFF RED ON Pattern 3 OFF OFF ON Table 2 Y Y N 9 Button pressed? Display shows Figure 3 and switch all LEDs off (see Table 2 - Pattern 3) Figure 1 Figure

20、 2Figure 3 Y N Y N N SOURCE Button pressed? SOURCE Button pressed? SOURCE Button pressed? ADC TEST Display shows ADC1 Value (Input Line - Key0) Display shows ADC2 Value (Input Line - Key1) Y Y N 9 Button pressed? ADC Test is used for checking the ADC inputs to the microprocessor. The display shows a

21、n ADC value between 0 and 255 for an input signal between 0 and 5V. Note : If the ADC value on the NTC line is below 69, the set will go to standby mode because the temperature is too high. Display shows ADC4 Value (Input Line - Option) N SOURCE Button pressed? Y Display shows ADC3 Value (Input Line

22、 - AmNTC) CLOCK/TIMER Button pressed? Y Y Y N N N CLOCK/TIMER Button pressed? 9 Button pressed? Display shows 32K Output on Quartz-Test-Pin pin 19 of uP = 2048Hz Display shows 12M Output on Quartz-Test-Pin pin 19 of uP = 2,929.6875Hz QUARTZ TEST PROG Button pressed? Disconnect Mains cord ? Y Y N N Y

23、 Display Tuner Version ccc Service frequencies are copied to the RAM (see Table 1) Tuner works normally except: PROGRAM button Service Mode left TUNER TEST PROG Button pressed? N PRESET 1 2 3 4 5 6 7 8 9 10 11 Europe EUR 87.5MHz 108MHz 531kHz 1602kHz 558kHz 1494kHz 87.5MHz 87.5MHz 87.5MHz 87.5MHz 98

24、MHz USA USA 87.5MHz 108MHz 530kHz 1700kHz 560kHz 1500kHz 98MHz 87.5MHz 87.5MHz 87.5MHz 87.5MHz Oversea OSE 87.5MHz 108MHz 531/530kHz* 1602/1700kHz* 558/560kHz* 1494/1500kHz* 87.5/98MHz* 87.5MHz 87.5MHz 87.5MHz 98/87.5MHz* Note: * Depending on the selected grid frequency (9 or 10kHz). By holding the

25、SOURCE and PROG buttons depressed while switching on the Mains supply, the tuning grid frequency is toggled between 9kHz and 10kHz for the Oversea (/21) version. Table 1 To start service test program hold T & SOURCE depressed while plugging in the mains cord Display shows the ROM version S-Vyy (Main

26、 menu) S refers to Service Mode V refers to Version yy refers to Software version number of the uProcessor (counting up from 01 to 99) SERVICE TEST PROGRAM LX7000SA & LX8000SA_Service Test Program_dd wk0232 3-13-1 VOL - (RC) Button pressed? N DVD DEALER TEST STEP 1 2 3 4 5 6 ACTION Check the correct

27、ness of the checksum of the flash. S2B Echo Mode. (This test is executed very fast and hence user will not be able to see this display message) Check the correctness of the IIC bus to the NVRAM. (This test need about 3 minutes to perform) Check writing to the NVRAM. Check writing to the SDRAM. (This

28、 test is executed very fast and hence user will not be able to see this display message) Result of all the tests. Disconnect mains cord to exit the Service Test Program. DISPLAY CHECKSUM FLASH S2B ECHO IIC NVRAM NVRAM WRITE SDRAM WRITE ALL TEST FAIL or ALL TEST PASS DVD Dealer Test is used to check

29、the flash RAM, the SDRAM, the DRAM, the NVRAM and the I2C communication. When all the tests are passed, display shows ALL TEST PASS. If at least one of the test fails, display shows ALL TEST FAIL. Y (Execute all the tests below without interaction) ERROR CODE 0601 1101 1102 1103 1104 1201 1202 1203

30、1204 1301 1302 1303 1304 1601 5401 5402 5403 5403 ERROR DESCRIPTION Calculated Checksum of FLASH is not correct I2C bus busy before start NVRAM access time-out No NVRAM acknowledge NVRAM reply time-out I2C bus busy Error sending I2C command to Slave Slave controller not responding Slave response is

31、not correct Parity error receiving data from Basic Engine Parity error sending data to Basic Engine No communication with Basic Engine Comunication time-out with Basic Engine The SDRAM is faulty I2C bus busy Error sending I2C command to Scart Switch IC Scart switch IC not responding Scart switch IC

32、response is not correct NUCLEUS NUMBER 6 11 - - - 12 - - - 13 - - - 16 54 - - - ERROR CODE (Nucleaus) Table 4 ERROR CODE 00 01 10 11 ERROR CODE (Faulty Modules) Table 3 STI + PERIPHERALS OK Faulty OK Faulty BASIC ENGINE PART OK OK Faulty Faulty VOL + (RC) Button pressed? Y N DVD PLAYER TEST STEP 1*

33、2* 3A* 3B* 4* 5 6 7 8* 9* 10* 11 12 13 14 15 ACTION Output of a test picture on all available video output devices. Output of noise on all channels available. Output of internally generated pink noise on all channels available, test picture (internally generated Colour Bar) on screen. Press S (RC) t

34、o go to Step 3B. Output of internally generated pink noise on all channels available, test picture (external signal) on screen. Press T (RC) to return to Step 3A. Sine sound output on all channels available. The sound can be stopped by pressing the STOP(RC) button. Returns the Software Version of th

35、e basic engine. The user can move the tray in and out by pressing PLAY(RC) or RESUME(RC) button. User can insert or remove a disc. The user can move the sledge in and out by pressing PLAY(RC) or RESUME(RC) button. The disc motor starts to run. Focus Test. Radial Test. The laser spot jumps to another

36、 position. Press PLAY(RC) to jump to the next position. Press RESUME(RC) to jump to the previous jump position. The user can move the tray in and out by pressing PLAY(RC) or RESUME(RC) button. User can insert or remove a disc. Reads out info from the error log (8 hex digits). Up to 16 errors can be

37、stored in a buffer. The elements can be selected by pressing the PLAY(RC) or RESUME(RC) button. If the error log does not contain any fault codes, LO-00000000 will be displayed. Shows all error bits. Selects the error bit by pressing PLAY(RC) or RESUME(RC) button. Runs the Dealer Test infinitely. Th

38、e information returned from the module will be displayed. The loop number indicates the number of times the loop test has been performed. aa- Error Code Faulty Modules (see Table 3) bbb - Loop Number cccc - Error Code Nucleaus (see Table 4) Disconnect mains cord to exit the Service Test Program. DIS

39、PLAY BAR PICTURE PINK NOISE SCART LOOP DVD SCART LOOP EXT SINE SOUND ENG- xx.yy.zz TRAY SLEDGE MOTOR FOCUS RADIAL GROOVES TRAY LO- wwxxyyzz ERROR BITS xx aa-bbb cccc DVD Player Test is used to start several DVD specific tests. At the end of the test, an error code aa-bbb cccc (see Step15) will be sh

40、own that indicates which module(s) failed. * User has to give a confirmation by triggering one of the following: - If the test is OK, press PLAY(RC) button then follow by T (RC) button to go to the next step. - If the test is not OK, press RESUME(RC) button then follow by T (RC) button to go to the

41、next step. Note : By pressing only the T (RC) button to go to the next step without triggering a confirmation, the test will be assume as OK by default. Equipment required to run the DVD Player Test: -television set -6 audio speakers -an external video source Go to next step by pressing T (RC) DIM (

42、RC) Button pressed? Y N DVD VERSION MATRIX INFO STEP 1 2 3 4 5 6 INFORMATION Slash version number Region code setting (Number 1 - 6) Menu language table : US/AP (USA-Asian Pacific language table) US/EU (USA-Europe language table) Audio/Subtitle language table (Number 1 - 4) Available of multichannel

43、 decording Available of smart picture Press 9 (RC) to exit DISPLAY SLASH # REGION # MULANG US/AP or MULANG US/EU ASLANG # MULTI-CH YES or MULTI-CH NO SMARTPIC YES or SMARTPIC NO Choose step by pressing S (RC) T (RC) DVD Version Matrix Info is used to read the version matrix information that are stor

44、ed/defined in the DVD module software. Y N Y N MUTE (RC) Button pressed? Software Version Received? DVD IIC COMMUNICATION TEST Send request for DVD Software Version via IIC ports Display shows DVD/www/xx.yy.zz Display shows FAIL Y N 9 (RC) Button pressed? Y N DVD IIC Communication Test is used to te

45、st the IIC communication port between the DVD module and the microprocessor of the set. www: refer to BEA Software version. BEA = Back End Application (DVD Application Software). xx.yy.zz : refer to Basic Engine Software version. Basic Engine = part of the DVD module controlling the servo. 9 (RC) Bu

46、tton pressed? N Y DISC (RC) Button pressed? DVD SERVICE TEST Y N 9 (RC) Button pressed? Display shows DVD SERVICE Remote Control (RC) must be in DVD source before start of any DVD Service Test. To start service test program hold T & SOURCE depressed while plugging in the mains cord Display shows the

47、 ROM version S-Vyy (Main menu) S refers to Service Mode V refers to Version yy refers to Software version number of the uProcessor (counting up from 01 to 99) SERVICE TEST PROGRAM LX7000SA & LX8000SA_Service Test Program_dd wk0232 3-23-2 -5V POWER AMP DAC 3X FM-95.00 MUTE_DVD DECODER ADV7300 FLI2200

48、 HIGH HEF4053BT DEINTERLACER -5V P-SCAN / YUV CENTRE SURROUND IEC958 INTERFACE L3-BUS CLK & TIMING CIRCUIT DIG_IN_CTRL MAINS TRAFO BC369 & LD1117 DEF BC369 DIG_IN_CTRL DIG_IN_CTRL LPS COIL DVD & REGISTERS INTERFACE CONTROL FORMATTER SIGNAL INPUT L/R GENERATOR PLL / CLK DAC DEF STD OVERSAMPLING YUV F

49、ORMATTER SIGNAL UDA1351TS POWER AMP OUTPUT GENERATOR TMP87CU74F SUPPLY POWER AMP SYNC CORE 3139 119 34790_Block Diagram (Sheet 130)_dd wk0232 4-14-1 SET BLOCK DIAGRAM SUPPLY * :FOR /21 ONLY GND GND 384FS GND I2C_CLK_DVD 4P 480mm BD FOLD DSD_L YC7 GND +3.3V GND YC6 YC5 GND +3V3 +3V3 YC4 1 1 DSD_CENTRE GND DSD_LFE MUTE SPDIF B_REF SCART1 1 LED SACD R_V 1 TRAFO 340mm * G_REF FFC 1MM GND GND +3.3V GND YC6 YC5 YC4 GND +5V 1 GND YC1 1 GPIO1(NC) DSD_PCM9 GND side Pb/Cb Pr/Cr SDA DSD_PCM8 (NC) +12V GND 1602 0385 1616 +3V3 +3V3 GND 1 SRR YC3 1 GND +5V GND YC7